Work locating and punching apparatus



July 31, 1928. 1,678,789

E- E. SABIN WORK LOCATING AND PUNCHING APPARATUS Filed Dec. 22, 1922 I llIIllu ullllll ALAI- r H l "Mimi WVE/VTUF- Patented July 31, 1928.

UNITED STATES PATENT OFFICE.

ERNEST E. SABIN, OF BEVERLY, MASSACHUSETTS, ASSIGN'OR TO UNITED SHOE MA- CHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WORK LOCATING- A ND FU NCHING APPARATUS.

. Application filed December 22, 1922 Serial no; 608,573.

This invention relates towork locating and punching apparatus and is herein shown as embodied in apparatus for locating an insole in predetermined relation to punches for the purpose of forming definitely located surfaces in the insole to'facilitate subsequent manufacturing and assembling operations. However, in certain broader aspects of the invention, the work locating devices may be employed in combination-with othertools than a punch or punches.

A shoe made by the process disclosed in the application of George E. \Varren, Ser. No. 476,659, filed June 11, 1921, has, as one of its elements, an insole with a molded sewing rib the contour of which has a pre-, determined relation to the periphery of the insole and. to other parts of the shoe. if the assembled parts are to fit properly, the insole must be accurately positioned with relation to said other parts and accordingly it is an object of the invention to provide the insole with surfaces, such as may conveniently be supplied by jig holes, having a predetermined relation to the sewing rib for cooperation with corresponding locating pins having a'corresponding predetermined relation to the parts of the shoe.

In accordance with one feature of the invention as herein exemplified, the rib of the insole is utilized to locate the insole by cooperation with a sole positioning member which bears the desired relation to the punches and fits inside the rib. in the construction selected for illustration, the sole positioning member bears against or fits the rib at three places, at the toe and at both sides some distance from the toe. The rib being more or less flimsy, bending of the rib by pressure against the positioning member and consequent displacement of the sole lengthwise on the member is avoided by means of an auxiliary toe plate which can be pushed against the outside of the rib at the toe to clamp the rib in its natural position. Another feature of the invention relates to improved punching and work stripping instrumentalities;

These and other features of the invention comprising certain combinations and arrangements of parts will be understood from the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings in which,

' Fig. 1 is a front elevation of the apparatus.

Fig. 2 is an enlarged front elevation of a portion of the apparatus.

Fig. is a perspective View, partly broken away, of a portion of the apparatus.

Fig. 4- is a side elevation, and

Fig. 5 is a plan viewof an insole after it has been punched.

The numeral 10 designates a frame having an overhanging arm 12 in which is journaled for rotation a horizontal shaft 14 driven in any'suitable way as by a pulley, belt and electric motor. The end of the shaft 14 has an eccentric pin 16 rotatable in a block 18 slidable in horizontal ways in a plunger 20 which reciprocates vertically in a cylindrical enlargement in the overhanging arm 12. The plunger 20 has, at its lower end, a rearward extension 22 to which are detachably secured the operating tool or tools, shown as parallel punch tubes 24. Attached by screws to the front of the plunger is a, U-shaped spring stripper 26 the lower arm ofwhich is perforated to permit the passage of the punch tubes. This lower arm of the stripper normally extends slightly below the lower ends of the punch tubes so that following the punching operation the work will be stripped from the tubes. A bracket 28 fixedto the overhanging arm has a horizontal extension overlying the punch tubes and fixed to this extension ,in alinement with the tubes and in their path of movement are two stripping pins 30. The pins are fixed against movement and when the punch tubes rise to a position surrounding the pins, the latter push the punchings or pills from the tubes. Below the overhanging arm is a hollow casing 32 containing a pair of cylindrical brass cutting blocks 34 which pass through the top of the casing and through a sole positioning member hereinafter referred to. To renew the cutting surface as the blocks wear, they may be adjusted vertically by screws 36 threaded in the bot-tom of the casing and abutting the lower ends of the cutting blocks and then the mutilated or worn portions may be removed, as by a file.

For locating an insole for punching, a sole positioning member 40 is fixed by screws 42 to the top of the casing 32. The member 40 may haven an outside contour which will conform in its entirety to the inner surface of the rib of the insole, but to facilitate manufacture it is preferably formed to fit the rib at three different places. There is a curved surface 44 at the toe end conforming to the toe portion of the rib and two surfaces 46 and 48 spaced widely from the toe of, the insole and conforming to the rib at these points. The rib of such an insole as this apparatus is especially intended to treat is more or less flimsy so that, if the insole were pressed against the surface 44 of the sole positioning member, the rib would be easily bent outwardly and the insole would occupy a position too far to therear and hence not be properly punched. Accordingly, an auxiliary toe plate 50'having an inner contour coinciding with the outside contour of. the rib at the toe is slidably mounted on the positioning member 40, a horizontal exten-- sion 52 on the plate 50 being received in -a horizontal slot 54 at the toe end of the positioning member. The toe plate is retained on the member 40 by a vertical pin 58 passing through a slot 56 in the extension and the toe plate 50 is normally held away from the surface 44 by a spring 60 abutting at one endagainst the member and at the other end against the extension 52. The punches are parallel and lie in a plane which passes substantially through the longitudinal center of the positioning member and are arranged at a predetermined distance apart and from the ends of the form. These distances are arbitrary but correspond to corresponding distances on the parts of the shoe. In Fig. 2 an insole S is shown in punching position with its rib R fitting the outside surfacesof the positioning member 40. If now the toe plate 50 is pushed inwardly, the rib is compelled to assume its natural position substantially perpendicular to the plane of the insole. The jig or locating holes, therefore, as shown in Fig. 5, are necessarily placed at a definite distance from the end of the insole J and are properly placed laterally by reason rib of an insole, and means for reciprocating the punch to form a locating hole in an insole positioned by said member.

2. In apparatus of the character described, a punch, a sole positioning member arranged in a predetermined relation to the punch and having a plurality of widely spaced points lying in a curve coinciding with the inside contour of the rib of an insole to posit-ion the insole by engagen1entwitl1 said rib, and means for operating the'punch;

3.- In apparatus of the character described, a punch, a sole positioning member fixed against movement transversely of the path of movement of the punch and having. an outside contour coinciding in part with the inside contour of the rib of an insole, an auxiliary plate having an inside contour coinciding with the outside contour of said rib, said plate being movable to grip theribr of an insole against the positioning member,

and means for operating the punch to form a locating hole 1n the insole.

4. In apparatus of the character described,

a tool, a sole positioning member arranged in predetermined relation to the tool and having an outside contour coinciding in having a contour conforming at one or more places with the contour ofthe rib of an 1nsole, said positioning member having a slot at the toe end, a toe plate conforming to the toe portion of the rib of the insole and having a portion slidable in said slot of the positioning member, a spring normally holding said toe plate away from the member, and means for limiting the movement of the plate.

I 6. In apparatus of the character described, a sole positioning member having portions of its outer surface coinciding with the inside contour of the ribof an insole, a pair of parallel punches arranged approximately in line with the longitudinal center of said positloning member, and means for IQGIPIOJ eating said punches to punch a pair of loeating holes in an insole positioned against said member. I

7 In apparatus of the class described, in combination, a reciprocable plunger having a punch tube, a work holder, a yielding stripper attached to said plunger and comprising a U-shaped spring plate one arm of which surrounds the punch to strip the Work therefrom, a fixed pin arranged in alinement With the bore of the punch tube and arranged to strip the pill from the punch tube as the latter rises and surrounds the in. a P 8. In apparatus of the character described, a reciprocating tool, a sole positioning member arranged in predetermined relation to the tool and having a contour of which a plurality of Widely spaced points coincide 10 with a contour of the rib of an insole to position the insole by engagement With said rib, and means for causing the tool to operate upon the insole While so positioned.

In testimony whereof I have signed my 15 name to this specification.

ERNEST E. SABIN. 

